I have a prusa I3 x 3d printer running repetier - host geeetech v0.90d and i can't get the extruder heater above 36 degrees c. even when i go to manual controls and turn the setting up it will not rise. https://reprap.org/forum/read.php?267,564546,564546#msg-564546 Mon, 20 Apr 2026 20:38:14 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?267,564546,565674#msg-565674 https://reprap.org/forum/read.php?267,564546,565674#msg-565674 GeeeTech also has a forum which would be a better place to ask questions caused by problems with their hardware.

Search for "ERR: MINTEMP" on the forum.]]> rhmorrison Repetier Fri, 02 Oct 2015 10:17:04 -0400 https://reprap.org/forum/read.php?267,564546,565667#msg-565667 https://reprap.org/forum/read.php?267,564546,565667#msg-565667 liltroy85 Repetier Fri, 02 Oct 2015 10:03:56 -0400 https://reprap.org/forum/read.php?267,564546,565457#msg-565457 https://reprap.org/forum/read.php?267,564546,565457#msg-565457 wiring diagram on the GT2560 Geeetech Wiki page you have the hotend plugged into Extruder 2 (or the hotbed connector instead of Extruder 1).

Make sure that the hotbed is plugged into the middle connector and the hotend cable into the bottom connector (in your picture where no wires are connected).]]> rhmorrison Repetier Fri, 02 Oct 2015 03:51:28 -0400 https://reprap.org/forum/read.php?267,564546,565227#msg-565227 https://reprap.org/forum/read.php?267,564546,565227#msg-565227 liltroy85 Repetier Thu, 01 Oct 2015 13:37:47 -0400 https://reprap.org/forum/read.php?267,564546,565207#msg-565207 https://reprap.org/forum/read.php?267,564546,565207#msg-565207 liltroy85 Repetier Thu, 01 Oct 2015 13:04:32 -0400 https://reprap.org/forum/read.php?267,564546,565164#msg-565164 https://reprap.org/forum/read.php?267,564546,565164#msg-565164 electronics board is your printer using?]]> rhmorrison Repetier Thu, 01 Oct 2015 11:27:05 -0400 https://reprap.org/forum/read.php?267,564546,565162#msg-565162 https://reprap.org/forum/read.php?267,564546,565162#msg-565162 48 watts power (should be enough).

You don't measure the heating block you measure the DC voltage going to the heating cartridge.
One side is connected to ground the other to the output of the FET that is driven by the E0 output of the board.]]> rhmorrison Repetier Thu, 01 Oct 2015 11:20:41 -0400 https://reprap.org/forum/read.php?267,564546,565151#msg-565151 https://reprap.org/forum/read.php?267,564546,565151#msg-565151 liltroy85 Repetier Thu, 01 Oct 2015 11:09:44 -0400 https://reprap.org/forum/read.php?267,564546,564949#msg-564949 https://reprap.org/forum/read.php?267,564546,564949#msg-564949 You need to get down to basics.
There is a pin that that is attached to the heating cartridge.
When output is 12vdc it heats, when output is 0vdc it does not heat.
Also the heating cartridge must have a finite resistance.
MEASURE THE RESISTENCE. If ~0 Ω or ~ infinite (millions) Ω then your heating cartridge is defective.
If it has a low Ω value say 2 - 8 Ω it is probably OK, then you need to see if 12vdc is being output by the pin connected to the heating cartridge (or not).]]> rhmorrison Repetier Thu, 01 Oct 2015 04:51:03 -0400 https://reprap.org/forum/read.php?267,564546,564797#msg-564797 https://reprap.org/forum/read.php?267,564546,564797#msg-564797 liltroy85 Repetier Wed, 30 Sep 2015 16:27:48 -0400 https://reprap.org/forum/read.php?267,564546,564724#msg-564724 https://reprap.org/forum/read.php?267,564546,564724#msg-564724 liltroy85 Repetier Wed, 30 Sep 2015 14:30:56 -0400 https://reprap.org/forum/read.php?267,564546,564640#msg-564640 https://reprap.org/forum/read.php?267,564546,564640#msg-564640 Is the heating element on constantly?
Does the firmware (FW) perhaps have a MAXTEMP defined?]]> rhmorrison Repetier Wed, 30 Sep 2015 11:50:41 -0400 https://reprap.org/forum/read.php?267,564546,564624#msg-564624 https://reprap.org/forum/read.php?267,564546,564624#msg-564624 liltroy85 Repetier Wed, 30 Sep 2015 11:19:00 -0400 https://reprap.org/forum/read.php?267,564546,564622#msg-564622 https://reprap.org/forum/read.php?267,564546,564622#msg-564622 Hmmm... :S

It is difficult to recommend anything without more information.
What hot end are you using?

For example, the E3D has become a very popular hot end and it comes with heater cartridges for 12vdc and 24vdc.
If you are running 12vdc but have a 24vdc heater cartridge then this would never get hot enough (although it should get up to ~50°C).]]> rhmorrison Repetier Wed, 30 Sep 2015 11:11:30 -0400 https://reprap.org/forum/read.php?267,564546,564611#msg-564611 https://reprap.org/forum/read.php?267,564546,564611#msg-564611 liltroy85 Repetier Wed, 30 Sep 2015 10:53:51 -0400 https://reprap.org/forum/read.php?267,564546,564551#msg-564551 https://reprap.org/forum/read.php?267,564546,564551#msg-564551 What voltage are you driving it at? I assume 12vdc.]]> rhmorrison Repetier Wed, 30 Sep 2015 08:46:19 -0400 https://reprap.org/forum/read.php?267,564546,564546#msg-564546 https://reprap.org/forum/read.php?267,564546,564546#msg-564546 liltroy85 Repetier Wed, 30 Sep 2015 08:34:02 -0400